Multiply.(3x + 2)(3x - 2)
A. 9x2 + 12x - 4
B. 9x2 - 12x - 4
C. 3x2 - 12x - 4
D. 9x2 - 4
Answer: D
Mathematics
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Use De Moivre's theorem to simplify the expression. Write the answer in a + bi form.(-5
+ 5i
)3
A. 5
+ 5i
B. 500
+ 500i
C. 50
+ 50i
D. 15
+ 15i
Mathematics
Determine the measure of the interior angle at vertex A.
A. 36° B. 180° C. 72° D. 360°
Mathematics
Find the unknown number in the proportion. Write your answer as a whole number or a mixed number if possible.
= 
A. x = 2
B. x = 
C. x = 2
D. x = 
Mathematics
Find the first term and the common difference for the arithmetic sequence.S3 = - 3, a3 = -4
A. a1 = 10, d = -3 B. a1 = 10, d = -2.67 C. a1 = 2, d = -3 D. a1 = 2, d = -2.67
Mathematics